CLI tests: replace deprecated calls

[woutdenolf]

https://gitlab.esrf.fr/workflow/external-ci/ewoks-kit/ewoks/-/jobs/2597385

inconsistent: https://github.com/ewoks-kit/ewoksppf/issues/16
FAILED ../tests/test_cli.py::test_cli_convert[argparse] - DeprecationWarning: -p/--parameter is deprecated; use -pn for node-specific parameters and -ps for parameters without a node selector.
FAILED ../tests/test_cli.py::test_cli_convert[click] - DeprecationWarning: -p/--parameter is deprecated; use -pn for node-specific parameters and -ps for parameters without a node selector.
FAILED ../tests/test_convert_cli.py::test_convert_with_all_inputs - DeprecationWarning: -p/--parameter is deprecated; use -pn for node-specific parameters and -pa for parameters without a node selector.
FAILED ../tests/test_convert_cli.py::test_convert_with_taskid_inputs - DeprecationWarning: -p/--parameter is deprecated; use -pt for node-specific parameters and -ps for parameters without a node selector.
FAILED ../tests/test_execute_cli.py::test_execute_with_convert_destination - DeprecationWarning: -p/--parameter is deprecated; use -pn for node-specific parameters and -ps for parameters without a node selector.
FAILED ../tests/test_execute_cli.py::test_execute_with_convert_destination_inputs_all - DeprecationWarning: -p/--parameter is deprecated; use -pn for node-specific parameters and -pa for parameters without a node selector.
FAILED ../tests/test_show_cli.py::test_show_with_inputs - DeprecationWarning: -p/--parameter is deprecated; use -pn for node-specific parameters and -pa for parameters without a node selector.

[arinbalyan]

I'll tackle this — replacing deprecated -p with -pn, -ps, -pa, or -pt across the 6 failing test files. PR incoming.

[arinbalyan]

PR submitted: #316